Assessments - 3, GPA: 4.7
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If a device has MIDI, it can be connected to another MIDI device (even of a different type or manufacturer) to exchange musical data. MIDI transmits various types of musical data such as data indicating that a key has been pressed or released, or that a controller has been moved. When you play a MIDI-equipped instrument, it will transmit MIDI data to indicate the performance gestures. Another MIDI device that receives this data will produce sound just as though it were the instrument being played. .....-, . .. ... This section explains how MIDI data is transmitted and received. a. Connections MIDI-equipped devices usually have three jacks; IN, OUT, and THRU. Use a MIDI cable to connect these jacks to the other devices in your system. Accepts MID! data Connect to the MIDI OUT or MIDI THRU of another device This connector transmits data Connect to the MIDI IN of another device from the unit itself J=£> Passes MIDI data received MIDI IN Controlling the TJ-220 from another device When using a sequencer or MIDI keyboard to control theU-220 make connections as follows. MIDI OUT g^resn““ — MIDI IN SI Д tissssssy Г I 11_I n 'MIDI Keyboard or 1M1DI Sequencer U-220 18 I.How MIDI data is communicated Using MIDI THRU MIDI THRU can be used to send the same stream of data to two or more devices. * It is theoretically possible to use MIDI THRU to connect any number of devices. However three is about the practical limit. Running a MIDI signal through many THRUs can garbie the transmitted data. If you need to connect more than three devices please use a MIDI Thru Box. b. MIDI Channels MIDI uses “channels” to transmit data independently to multiple devices over a single cable. You can think of MIDI channels as being similar to television channels. You can switch channels on a television receiver to receive many different broadcasts. When the channel of the receiver matches the channel of the transmitter, the data of that channel is received. Broadcasting 1 Broadcasting 2 I Channel 5 j Broadcasting 3 Channel 3 I MIDI has sixteen channels, numbered 1—16. When the MIDI channel of the receiving device matches the MIDI channel of the transmitting device, the data will be received and the receiving device will produce the appropriate sound. 19 .How MIDI data is communicated Sounds MIDI OUT 'Transmit Channel 1 MIDI IN iiHiHiHimiiin □ Receive Channel 1 Does not sound Transmit Channel 2 only Sound Module В sounds MIDI OUT MIDI i IN BDoa no рваса E , .....,,, 1 в ваювом I s............. i...............!.. :r пн SI III III 'III! Illl! 1 Receive Channel 1 Sound Module A Sound Module В MIDI OUT MIDI MIDI IN THRU □ s MIDI IN dZl □ Receive Channel 1 Receive Channel 2 Transmit Channel 2 20 OD 2. MIDI data used by the U-220 MIDI transmits data using various types of Message. The following types of MIDI message are used by the U-220. Channel Voice Messages Note Data Program Change Control Change Pitch Bender Aftertouch System Messages Exclusive Messages etc. Channel voice messages Channel voice messages are transmitted and received on a specific MIDI channel. These messages include basic types of musical data. Note: data from the keyboard Note messages tell how the keyboard is being played. These message indicate which key (the note number) was played, and how strongly (the velocity). Similar messages arc transmitted when a key is released. For the U-220's rhythm part and for most other rhythm machines, each note number will play a different rhythm sound. Program change: data that selects sounds Program change messages are used mainly to select sounds. The U-220 uses program change messages to select patches, timbres, and rhythm setups. Devices made by different manufacturers will respond in different ways to program change messages. Check the manuals for your equipment. Control change: data for musical expression Control change messages are used to control musical expressions such as vibrato, hold, volume, and pan. Devices made by different manufacturers may transmit and receive different types of control change message, and respond in different ways to these messages. Consult the MIDI implementation’ charts of your equipment to see which control change messages are transmitted and received. Pitch bend Change: data for pitch change The pitch bender lever found on many keyboards only transmits the position of the lever. The actual pitch change (bend range) will depend on the settings of the U-220. The pitch bend range can be set for each timbre of the U-220. Aftertouch The aftertouch data transmitted by many keyboards transmits the force with which you press down on the keyboard after playing a note. The effect this will have will depend on the settings of the U-220. Aftertouch is divided into “channel aftertouch " and “polyphonic aftertouch". Channel aftertouch transmits a single aftertouch value telling the pressure of the key being pressed mos...